EXT4-fs (loop6): unmounting filesystem 00000000-0000-0000-0000-000000000000. watchdog: BUG: soft lockup - CPU#1 stuck for 21s! [syz-executor.2:4324] Modules linked in: irq event stamp: 2446769 hardirqs last enabled at (2446768): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (2446769): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (2439636): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (2439715): [] __irq_exit_rcu+0xc4/0x100 CPU: 1 UID: 0 PID: 4324 Comm: syz-executor.2 Not tainted 6.12.0-next-20241128 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:lock_is_held_type+0xe3/0x120 Code: 31 c0 44 39 f0 41 0f 94 c0 b8 ff ff ff ff 65 0f c1 05 d9 99 7d 7b 83 f8 01 75 2e 48 f7 04 24 00 02 00 00 74 01 fb 48 83 c4 08 <44> 89 c0 5b 5d 41 5c 41 5d 41 5e 41 5f e9 cb 48 02 00 44 89 c0 e9 RSP: 0018:ffff88806cf09450 EFLAGS: 00000296 RAX: 0000000000000001 RBX: 0000000000000003 RCX: 0000000000000001 RDX: 0000000000000000 RSI: ffff88803f450168 RDI: ffff88800ea98ab8 RBP: ffff88803f450168 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: dd6c604830043200 R12: ffff88800ea98000 R13: ffff88800ea98a40 R14: 00000000ffffffff R15: ffff88800ea98ab8 FS: 00007fa0f18fa700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055558713cc58 CR3: 000000003db68000 CR4: 0000000000350ef0 Call Trace: cfg80211_update_known_bss+0x995/0x11e0 __cfg80211_bss_update+0xe0/0x1fe0 cfg80211_inform_single_bss_data+0x6e2/0x1c70 cfg80211_inform_bss_data+0x20f/0x3510 cfg80211_inform_bss_frame_data+0x250/0x6a0 ieee80211_bss_info_update+0x2f6/0xa90 ieee80211_scan_rx+0x474/0xac0 ieee80211_rx_list+0x1e38/0x2840 ieee80211_rx_napi+0xdc/0x3b0 ieee80211_handle_queued_frames+0xd9/0x130 tasklet_action_common+0x235/0x3b0 handle_softirqs+0x1b1/0x770 __irq_exit_rcu+0xc4/0x100 irq_exit_rcu+0x9/0x20 sysvec_apic_timer_interrupt+0x70/0x80 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:qlist_free_all+0x96/0x160 Code: 0f 82 e0 00 00 00 48 c7 c2 00 00 00 80 48 2b 15 e0 cd f1 03 48 01 ca 48 c1 ea 0c 48 c1 e2 06 48 03 15 be cd f1 03 48 8b 72 08 <48> 89 d1 40 f6 c6 01 0f 85 a1 00 00 00 66 90 80 79 33 f5 ba 00 00 RSP: 0018:ffff888040cf7550 EFLAGS: 00000282 RAX: ffff88800c251250 RBX: ffff88800c251250 RCX: ffff88808c251250 RDX: ffffea0000309440 RSI: ffff888008c4f780 RDI: 0000000000080000 RBP: 0000000000000000 R08: ffff88800e47ccb8 R09: 00000000000d0008 R10: ffffea0000391f00 R11: 0000000000000000 R12: 0000000000000000 R13: ffff888040cf7588 R14: ffff88800e47ccb8 R15: ffff88800e47ccb8 kasan_quarantine_reduce+0x19f/0x240 __kasan_slab_alloc+0x49/0x70 kmem_cache_alloc_noprof+0x13d/0x3d0 __proc_create+0x2b7/0x8d0 proc_create_reg+0xb6/0x180 proc_create_net_data+0x90/0x1c0 arp_net_init+0x55/0x80 ops_init+0x1e1/0x650 setup_net+0x1d7/0x7a0 copy_net_ns+0x2e3/0x6f0 create_new_namespaces+0x3f6/0xaf0 copy_namespaces+0x45c/0x580 copy_process+0x2704/0x8ee0 kernel_clone+0xeb/0x850 __do_sys_clone3+0x1d9/0x260 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fa0f4384b19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fa0f18fa188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007fa0f4497f60 RCX: 00007fa0f4384b19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 0000000020004c00 RBP: 00007fa0f43def6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe0fd0575f R14: 00007fa0f18fa300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at default_idle+0x1e/0x30 loop6: detected capacity change from 0 to 512 EXT4-fs (loop6): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. EXT4-fs (loop6): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop6: detected capacity change from 0 to 512 EXT4-fs (loop6): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. EXT4-fs (loop6): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop6: detected capacity change from 0 to 512 EXT4-fs (loop6): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. audit: type=1400 audit(1732812504.377:10): avc: denied { watch_reads } for pid=4403 comm="syz-executor.3" path="/syzkaller-testdir552875480/syzkaller.kbATsy/24" dev="sda" ino=15977 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=dir permissive=1 EXT4-fs (loop6): unmounting filesystem 00000000-0000-0000-0000-000000000000. ---------------- Code disassembly (best guess): 0: 31 c0 xor %eax,%eax 2: 44 39 f0 cmp %r14d,%eax 5: 41 0f 94 c0 sete %r8b 9: b8 ff ff ff ff mov $0xffffffff,%eax e: 65 0f c1 05 d9 99 7d xadd %eax,%gs:0x7b7d99d9(%rip) # 0x7b7d99ef 15: 7b 16: 83 f8 01 cmp $0x1,%eax 19: 75 2e jne 0x49 1b: 48 f7 04 24 00 02 00 testq $0x200,(%rsp) 22: 00 23: 74 01 je 0x26 25: fb sti 26: 48 83 c4 08 add $0x8,%rsp * 2a: 44 89 c0 mov %r8d,%eax <-- trapping instruction 2d: 5b pop %rbx 2e: 5d pop %rbp 2f: 41 5c pop %r12 31: 41 5d pop %r13 33: 41 5e pop %r14 35: 41 5f pop %r15 37: e9 cb 48 02 00 jmpq 0x24907 3c: 44 89 c0 mov %r8d,%eax 3f: e9 .byte 0xe9